public class Student {
     public String name;
    private int age;
     static String sex;
     public   static void Study(){
        System.out.println("好好学习");
    }

    public Student(String name, int age) {
        this.name = name;
        this.age = age;
    }

    public Student(int age) {
        this.age = age;
    }

    public Student(String name) {
        this.name = name;
    }

    public static String getSex() {
        return sex;
    }

    public static void setSex(String sex) {
        Student.sex = sex;
    }

    public static void main(String[] args) {
        Student student=new Student("liushuai",25);
    }
}
